Product Description:

The B-202-B-23 is a brushless servo motor produced by Kollmorgen and supplied within the Kollmorgen Goldline B and BH Motors series. In motion-control systems, it converts regulated electrical power from a matched drive into rotary torque and speed. Its brushless design supports closed-loop control with a compatible amplifier and feedback device. This makes it suitable for indexers, packaging axes, and other precision duties on factory lines where controlled acceleration and repeatable motion are required.

This model develops a back electromotive force of 49.0 VRMS/krpm, which the drive uses to calculate commutation voltage at a given velocity. It can deliver a continuous line current of 3.0 ARMS through windings with 6.98 Ω of DC resistance, balancing copper loss with available thermal capacity. Coil inductance is 68.0 mH, which helps smooth current ripple as the PWM drive switches. During acceleration, the motor can accept 9.6 ARMS peak current and produce up to 7.38 N-m of peak torque. Normal operating speed reaches 3800 rpm, and resolver feedback reports shaft position to the controller.

The motor has a power rating of 1.0 kW, indicating the mechanical output available at rated speed and torque without exceeding temperature limits. Low rotor inertia of 0.0000996 kg-m² supports fast velocity changes, and the thermal time constant of 18 min shows how quickly winding temperature rises toward steady state under load. Torque sensitivity of 0.81 N-m/ARMS gives a clear relationship between current and output torque, which supports predictable servo response as load demand changes. Additional electrical limits include 250 VRMS maximum line voltage, stall torques of 2.59 N-m at 25 °C and 2.44 N-m at 40 °C, and a frameless resolver for shaft-position feedback during low-speed operation.